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The problem is caused by "Dog leg rapid movement". As Josh had suggested. There is a bug in Mastercam X9, you have to double and triple check if the rapid motion has actually been updated. I bet the 4 tools that cause a problem are used to machine a number of operations at different planes before the tool change. Try to force a tool change in between operations.
I usually take RS232 cable and hook it up my rear. It takes 3 farts to setup up a COM3 Port. The Baud rate is a little more complex for Mastercam 2018. You should contact your Mastercam Reseller for the exact sequence..
As Colin had previously suggested, you need a different post.
The "Standard Coolant" options in tool def are disabled. The Values are taken from Machine Def. None of these values are in the post.
For newer posts the coolant M-codes are specified in "Machine Definition"
Settings->Machine Definition Manger->"Load Machine Definition file"->Edit General Machine Parameters->Coolant commands
Just curious: what equipment are you using? Rectangular part, x and c axis in g-code. Well: make sure that the geometry you are cutting are lines and not splines. G code seems to be consistent with the finishing results that you are seeing. As others have mentioned: your feed is too high, how is the feed calculated for rotary axis?
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